Comedian Jack Whitehall's character JP tells another character in the opening installment of the third series: "I'll take you to a place on the King's Road where Prince Harry got a hand job off an assistant manager at Abercrombie & Fitch."

Channel 4 has responded to complaints by describing the joke as "clearly tongue in cheek", adding that the context of the remark should be considered.

However, The Daily Telegraph quotes Conservative MP Andrew Rosindell as saying: "The media should not involve the royal family in this sort of thing. It's inappropriate and degrading and it demeans the broadcasters that engage in it. It's just wrong.

"It's all very well to have a go at politicians but we can respond to this sort of thing, whereas the royal family are not in a position to respond so it's unfair on them. Senior members of the royal family should not be treated like this."